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Center for Computational Systems Medicine
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Fusion Gene Summary

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Fusion Gene ORF analysis

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Fusion Genomic Features

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Fusion Protein Features

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Fusion Gene Sequence

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Fusion Gene PPI analysis

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Related Drugs

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Related Diseases

Fusion gene:DDX4-POLR2I (FusionGDB2 ID:HG54514TG5438)

Fusion Gene Summary for DDX4-POLR2I

check button Fusion gene summary
Fusion gene informationFusion gene name: DDX4-POLR2I
Fusion gene ID: hg54514tg5438
HgeneTgene
Gene symbol

DDX4

POLR2I

Gene ID

54514

5438

Gene nameDEAD-box helicase 4RNA polymerase II subunit I
SynonymsVASARPB9|hRPB14.5
Cytomap('DDX4')('POLR2I')

5q11.2

19q13.12

Type of geneprotein-codingprotein-coding
Descriptionprobable ATP-dependent RNA helicase DDX4DEAD (Asp-Glu-Ala-Asp) box polypeptide 4DEAD box protein 4DEAD/H (Asp-Glu-Ala-Asp/His) box polypeptide 4vasa homologDNA-directed RNA polymerase II subunit RPB9DNA-directed RNA polymerase II 14.5 kDa polypeptideDNA-directed RNA polymerase II subunit IRNA polymerase II 14.5 kDa subunitRNA polymerase II subunit B9RPB14.5polymerase (RNA) II (DNA directed) polypeptide
Modification date2020031320200320
UniProtAcc..
Ensembl transtripts involved in fusion geneENST00000508580, ENST00000353507, 
ENST00000354991, ENST00000505374, 
ENST00000511853, ENST00000514278, 
Fusion gene scores* DoF score1 X 1 X 1=17 X 3 X 5=105
# samples 18
** MAII scorelog2(1/1*10)=3.32192809488736log2(8/105*10)=-0.39231742277876
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
Context

PubMed: DDX4 [Title/Abstract] AND POLR2I [Title/Abstract] AND fusion [Title/Abstract]

Most frequent breakpointDDX4(55063768)-POLR2I(36605615), # samples:1
Anticipated loss of major functional domain due to fusion event.DDX4-POLR2I seems lost the major protein functional domain in Tgene partner, which is a cell metabolism gene due to the frame-shifted ORF.
DDX4-POLR2I seems lost the major protein functional domain in Tgene partner, which is a essential gene due to the frame-shifted ORF.
* DoF score (Degree of Frequency) = # partners X # break points X # cancer types
** MAII score (Major Active Isofusion Index) = log2(# samples/DoF score*10)

check button Gene ontology of each fusion partner gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
TgenePOLR2I

GO:0006366

transcription by RNA polymerase II

9852112



check button Fusion gene information
* All genome coordinats were lifted-over on hg19.
* Click on the break point to see the gene structure around the break point region using the UCSC Genome Browser.
SourceDiseaseSampleHgeneHchrHbpHstrandTgeneTchrTbpTstrand
ChimerDB4OVTCGA-13-0913DDX4chr5

55063768

+POLR2Ichr19

36605615

-


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Fusion Gene ORF analysis for DDX4-POLR2I

check button Open reading frame (ORF) analsis of fusion genes based on Ensembl gene isoform structure.
* Click on the break point to see the gene structure around the break point region using the UCSC Genome Browser.
ORFHenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrand
3UTR-3CDSENST00000508580ENST00000221859DDX4chr5

55063768

+POLR2Ichr19

36605615

-
Frame-shiftENST00000353507ENST00000221859DDX4chr5

55063768

+POLR2Ichr19

36605615

-
Frame-shiftENST00000354991ENST00000221859DDX4chr5

55063768

+POLR2Ichr19

36605615

-
Frame-shiftENST00000505374ENST00000221859DDX4chr5

55063768

+POLR2Ichr19

36605615

-
Frame-shiftENST00000511853ENST00000221859DDX4chr5

55063768

+POLR2Ichr19

36605615

-
intron-3CDSENST00000514278ENST00000221859DDX4chr5

55063768

+POLR2Ichr19

36605615

-

check buttonORFfinder result based on the fusion transcript sequence of in-frame fusion genes.
HenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrandSeq length
(transcript)
BP loci
(transcript)
Predicted start
(transcript)
Predicted stop
(transcript)
Seq length
(amino acids)

check buttonDeepORF prediction of the coding potential based on the fusion transcript sequence of in-frame fusion genes. DeepORF is a coding potential classifier based on convolutional neural network by comparing the real Ribo-seq data. If the no-coding score < 0.5 and coding score > 0.5, then the in-frame fusion transcript is predicted as being likely translated.
HenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrandNo-coding scoreCoding score

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Fusion Genomic Features for DDX4-POLR2I


check buttonFusionAI prediction of the potential fusion gene breakpoint based on the pre-mature RNA sequence context (+/- 5kb of individual partner genes, total 20kb length sequence). FusionAI is a fusion gene breakpoint classifier based on convolutional neural network by comparing the fusion positive and negative sequence context of ~ 20K fusion gene data. From here, we can have the relative potentency of the 20K genomic sequence how individual sequnce will be likely used as the gene fusion breakpoints.
HgeneHchrHbpHstrandTgeneTchrTbpTstrand1-pp (fusion gene breakpoint)


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Fusion Protein Features for DDX4-POLR2I


check button Four levels of functional features of fusion genes
Go to FGviewer search page for the most frequent breakpoint (https://ccsmweb.uth.edu/FGviewer/:55063768/:36605615)
- FGviewer provides the online visualization of the retention search of the protein functional features across DNA, RNA, protein, and pathological levels.
- How to search
1. Put your fusion gene symbol.
2. Press the tab key until there will be shown the breakpoint information filled.
4. Go down and press 'Search' tab twice.
4. Go down to have the hyperlink of the search result.
5. Click the hyperlink.
6. See the FGviewer result for your fusion gene.
FGviewer

check buttonMain function of each fusion partner protein. (from UniProt)
HgeneTgene
..
FUNCTION: Transcriptional activator which is required for calcium-dependent dendritic growth and branching in cortical neurons. Recruits CREB-binding protein (CREBBP) to nuclear bodies. Component of the CREST-BRG1 complex, a multiprotein complex that regulates promoter activation by orchestrating a calcium-dependent release of a repressor complex and a recruitment of an activator complex. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex. At the same time, there is increased recruitment of CREBBP to the promoter by a CREST-dependent mechanism, which leads to transcriptional activation. The CREST-BRG1 complex also binds to the NR2B promoter, and activity-dependent induction of NR2B expression involves a release of HDAC1 and recruitment of CREBBP (By similarity). {ECO:0000250}.FUNCTION: Transcriptional activator which is required for calcium-dependent dendritic growth and branching in cortical neurons. Recruits CREB-binding protein (CREBBP) to nuclear bodies. Component of the CREST-BRG1 complex, a multiprotein complex that regulates promoter activation by orchestrating a calcium-dependent release of a repressor complex and a recruitment of an activator complex. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex. At the same time, there is increased recruitment of CREBBP to the promoter by a CREST-dependent mechanism, which leads to transcriptional activation. The CREST-BRG1 complex also binds to the NR2B promoter, and activity-dependent induction of NR2B expression involves a release of HDAC1 and recruitment of CREBBP (By similarity). {ECO:0000250}.

check buttonRetention analysis result of each fusion partner protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at

download page


* Minus value of BPloci means that the break pointn is located before the CDS.
- In-frame and retained protein feature among the 13 regional features.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenProtein featureProtein feature note

- In-frame and not-retained protein feature among the 13 regional features.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenProtein featureProtein feature note


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Fusion Gene Sequence for DDX4-POLR2I


check button For in-frame fusion transcripts, we provide the fusion transcript sequences and fusion amino acid sequences. To have fusion amino acid sequence, we ran ORFfinder and chose the longest ORF among the all predicted ones.

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Fusion Gene PPI Analysis for DDX4-POLR2I


check button Go to ChiPPI (Chimeric Protein-Protein interactions) to see the chimeric PPI interaction in

ChiPPI page.


check button Protein-protein interactors with each fusion partner protein in wild-type (BIOGRID-3.4.160)
HgeneHgene's interactorsTgeneTgene's interactors


check button - Retained PPIs in in-frame fusion.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenStill interaction with


check button - Lost PPIs in in-frame fusion.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenInteraction lost with


check button - Retained PPIs, but lost function due to frame-shift fusion.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenInteraction lost with


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Related Drugs for DDX4-POLR2I


check button Drugs targeting genes involved in this fusion gene.
(DrugBank Version 5.1.8 2021-05-08)
PartnerGeneUniProtAccDrugBank IDDrug nameDrug activityDrug typeDrug status

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Related Diseases for DDX4-POLR2I


check button Diseases associated with fusion partners.
(DisGeNet 4.0)
PartnerGeneDisease IDDisease name# pubmedsSource